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Journal of Projectiles, Rockets, Missiles and Guidance >

2024 , Vol. 44 >Issue 5: 121 - 126

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2024.05.015

Verification of Variable Temperature Performance of Polarization-maintaining Fiber with Low Refractive Index Temperature Coefficient

  • CUI Zhichao 1 ,
  • LI Yafan 1, 2 ,
  • WEI Fei 2 ,
  • KONG Jun 2 ,
  • KOU Liangliang 2 ,
  • LUO Rui 2 ,
  • MA Haiquan 2
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  • 1 AVIC Xi’an Flight Automatic Control Research Institute,Xi’an 710075,Shaanxi, China
  • 2 AVIC Jierui (Xi’an) Photoelectric Technology Co., Ltd.,Xi’an 710086,Shaanxi, China

Received date: 2024-08-25

  Online published: 2024-12-18

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Abstract

The working accuracy level at wide temperature range is the main bottleneck restricting the application of fiber optic gyroscope in more fields, which is mainly reflected in the zero bias stability index with variable temperature. Previous researches on thermal design, processing technic and algorithm compensation have greatly improved the temperature variable performance of fiber optic gyroscope. Fiber coil is a sensitive device of fiber optic gyroscope, and polarization-maintaining fiber is the main material of the fiber coil, whose performance is closely related to the temperature variable performance of the fiber coil, but relevant mechanism analysis and experimental research on the polarization-maintaining fiber and temperature variable accuracy are few. Therefore, based on the analysis of the mechanism of Shupe error caused by fiber ring at the variable temperature environment, it is found that the temperature coefficient of refractive index of the polarization-maintaining fiber is the main influencing factor. Through finite element simulation and combining with testing the refractive index temperature coefficient of PMF FBG, it is found that CAT PMF has lower refractive index temperature coefficient than traditional PANDA PMF. Finally, by winding two types of polarizing fiber to make fiber coil for testing, the results show that compared with PANDA PMF, the variable temperature zero bias range of fiber coil wound by CAT PMF converges by 21.1%, and the variable temperature zero bias stability improves by 22.9%, which further confirms the application prospect of CAT PMF to improve the variable temperature performance of fiber coil.

Key words： fiber coil; FBG; refractive index; variable temperature zero bias stability

Cite this article

CUI Zhichao , LI Yafan , WEI Fei , KONG Jun , KOU Liangliang , LUO Rui , MA Haiquan . Verification of Variable Temperature Performance of Polarization-maintaining Fiber with Low Refractive Index Temperature Coefficient[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2024 , 44(5) : 121 -126 . DOI: 10.15892/j.cnki.djzdxb.2024.05.015

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